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Q. No.The human heart is derived from embryonic:
1.
Ectoderm
2.
Mesoderm
3.
Endoderm
4.
All three germ layers
Subtopic: Human Heart: Gross Anatomy |
91%
From NCERT
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To obtain a standard ECG, a patient is connected to the machine with three electrical leads including all the following except:
| 1. | One to right wrist | 2. | One to left wrist |
| 3. | One to right ankle | 4. | One to left ankle |
Subtopic: ECG & Coronary Artery Disease |
80%
From NCERT
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During a cardiac cycle, the ventricular systole will lead to:
| 1. | ventricular filling. |
| 2. | the atrioventricular valves to close, and then the semilunar valves to open. |
| 3. | the semilunar valves to close, and then the atrioventricular valves to open. |
| 4. | pressure to become greater in the aorta and pulmonary trunk than in the ventricles. |
Subtopic: Human Heart: Cardiac Cycle |
85%
From NCERT
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The ‘double circulation’ of humans includes:
I: Systemic circulation
II: Coronary circulation
III: Pulmonary circulation
IV: Portal circulation
I: Systemic circulation
II: Coronary circulation
III: Pulmonary circulation
IV: Portal circulation
| 1. | I and III only | 2. | I and II only |
| 3. | II and IV only | 4. | II and III only |
Subtopic: Human Heart: Double Circulation |
91%
From NCERT
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Consider the two given statements:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Pulmonary circulation carries deoxygenated blood to the lungs and brings oxygenated blood back to the heart. |
| II: | The systemic circulation provides nutrients, oxygen and other essential substances to the tissues and takes carbon dioxide and other harmful substances away for elimination. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Human Heart: Cardiac Cycle |
89%
From NCERT
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The cardiac output can be increased by:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I. | Sympathetic neural signals |
| II. | Adrenal cortical hormones |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Regulation of Cardiac Activity |
From NCERT
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Match the items given in Column I with those in Column II and select the correct option given below:
| Column I | Column II | ||
| a. | Tricuspid valve | (i) | Between left atrium and left ventricle |
| b. | Bicuspid valve | (ii) | Between right ventricle and pulmonary artery |
| c. | Semilunar valve | (iii) | Between right atrium and right ventricle |
| a | b | c | |
| 1. | iii | i | ii |
| 2. | i | iii | ii |
| 3. | i | ii | iii |
| 4. | ii | i | iii |
Subtopic: Human Heart: Gross Anatomy |
89%
From NCERT
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The hepatic portal vein drains blood to liver from:
| 1. Stomach | 2. Kidneys |
| 3. Intestine | 4. Heart |
Subtopic: Circulatory Pathways |
92%
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Subtopic: Human Heart: Gross Anatomy |
88%
From NCERT
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The cell shown in the given diagram:
| 1. | is a bone marrow stem cells committed to produce RBCs |
| 2. | is the megakaryocyte |
| 3. | is the commonest WBC and is phagocytic |
| 4. | is responsible for acquired immunity in humans |
Subtopic: Blood: White Blood Cells |
82%
From NCERT
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